静电纺丝合成Gd2O3:Er3+@Gd2O3:Yb3+核壳纳米纤维的上转换红光发射和发光测温

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Chalcogenide Letters Pub Date : 2023-07-05 DOI:10.15251/cl.2023.207.439

Z. Liu, R. X. Wang, K. Sun, X. Ling, J. W. Sun, D. Chen

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引用次数: 0

摘要

采用静电纺丝方法成功制备了具有立方相的Gd2O3:Er3+@Gd2O3:Yb3+核壳纳米纤维。用X射线衍射、扫描电子显微镜对其结构、形貌进行了研究。在980nm激发下，可见光中的上转换光致发光表现出强烈的红光发射带，能级的明显分裂导致了明显的分裂峰。可见光发射对303-543K范围内的温度敏感。红色发射显示随着温度的升高而猝灭。热猝灭的活化能为0.1408eV。系统地研究了与温度相关的红色发射多峰。基于上转换发射光谱中I680.31nm/I683.03nm的谷峰比，实现了具有恒定绝对灵敏度的温度传感。这些结果表明，Gd2O3:Er3+@Gd2O3:Yb3+纳米纤维是一种很有前途的发光测温材料，在科学研究和工业上都有应用价值。

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Upconversion red light emission and luminescence thermometry of Gd2O3:Er3+ @Gd2O3:Yb3+ core-shell nanofibers synthesized via electrospinning

Gd2O3:Er3+@Gd2O3:Yb3+ core-shell nanofibers with cubic phase were successfully fabricated by electrospinning method. The structural, morphological properties were investigated by X-Ray diffraction, scanning electron microscopy. Under 980 nm excitation, the upconversion photoluminescence in visible light exhibits strong red emitting band with obvious splitting peaks resulted from stark splitting of energy level. The visible emissions are sensitive to temperature in the range of 303-543 K. The red emission displays quenching with elevation of temperature. The activation energy for thermal quenching is equal to 0.1408 eV. The temperature dependent multi-peaks of red emission were systematically investigated. Based on valley and peak ratio of I680.31nm/ I683.03nm in upconversion emission spectra, temperature sensing with constant absolute sensitivity was achieved. These results suggest Gd2O3:Er3+@Gd2O3:Yb3+ nanofibers are promising candidates for luminescence thermometry, which may provide their application values in both scientific research and industry.

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来源期刊

Chalcogenide Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED

CiteScore

1.80

自引率

20.00%

发文量

审稿时长

1 months

期刊介绍： Chalcogenide Letters (CHL) has the aim to publish rapidly papers in chalcogenide field of research and appears with twelve issues per year. The journal is open to letters, short communications and breakings news inserted as Short Notes, in the field of chalcogenide materials either amorphous or crystalline. Short papers in structure, properties and applications, as well as those covering special properties in nano-structured chalcogenides are admitted.